*{
    margin: 0;
    padding: 0;
   
}

body{
  background-color: rgb(241, 242,246);
}
.fl{
    float: left;
}
.fr{
    float: right;
}
.mt{
    margin-top: 20px;
}
.mb{
    margin-bottom: 20px;
}
.ml{
    margin-left: 20px;
}
.mr{
    margin-right: 20px;
}
.clear:after{
    content: "";
    height: 0;
    display: block;
    clear: both;
}
.pt{
    padding-top: 20px;
}
.pb{
    padding-bottom: 20px;
}
.pl{
    padding-left: 20px;
}
.pr{
    padding-right: 20px;
}


a{
    text-decoration: none;
}
ul,li{
    list-style: none;
}
//滚动条隐藏
::-webkit-scrollbar{
    display: none;
}

